/**
   * @fileoverview Validates newlines before and after dots
   * @author Greg Cochard
   * @copyright 2015 Greg Cochard
   */
  
  "use strict";
  
  var astUtils = require("../ast-utils");
  
  //------------------------------------------------------------------------------
  // Rule Definition
  //------------------------------------------------------------------------------
  
  module.exports = function(context) {
  
      var config = context.options[0],
          // default to onObject if no preference is passed
          onObject = config === "object" || !config;
  
      /**
       * Reports if the dot between object and property is on the correct loccation.
       * @param {ASTNode} obj The object owning the property.
       * @param {ASTNode} prop The property of the object.
       * @param {ASTNode} node The corresponding node of the token.
       * @returns {void}
       */
      function checkDotLocation(obj, prop, node) {
          var dot = context.getTokenBefore(prop);
  
          if (dot.type === "Punctuator" && dot.value === ".") {
              if (onObject) {
                  if (!astUtils.isTokenOnSameLine(obj, dot)) {
                      context.report(node, dot.loc.start, "Expected dot to be on same line as object.");
                  }
              } else if (!astUtils.isTokenOnSameLine(dot, prop)) {
                  context.report(node, dot.loc.start, "Expected dot to be on same line as property.");
              }
          }
      }
  
      /**
       * Checks the spacing of the dot within a member expression.
       * @param {ASTNode} node The node to check.
       * @returns {void}
       */
      function checkNode(node) {
          checkDotLocation(node.object, node.property, node);
      }
  
      return {
          "MemberExpression": checkNode
      };
  };
  
  module.exports.schema = [
      {
          "enum": ["object", "property"]
      }
  ];